JPS56143875A - Negative pressure responsive valve - Google Patents

Negative pressure responsive valve

Info

Publication number
JPS56143875A
JPS56143875A JP4784980A JP4784980A JPS56143875A JP S56143875 A JPS56143875 A JP S56143875A JP 4784980 A JP4784980 A JP 4784980A JP 4784980 A JP4784980 A JP 4784980A JP S56143875 A JPS56143875 A JP S56143875A
Authority
JP
Japan
Prior art keywords
negative pressure
valve
chamber
pressure
opened
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP4784980A
Other languages
Japanese (ja)
Other versions
JPS6230347B2 (en
Inventor
Kazuhiko Kitamura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Aisin Corp
Original Assignee
Aisin Seiki Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Aisin Seiki Co Ltd filed Critical Aisin Seiki Co Ltd
Priority to JP4784980A priority Critical patent/JPS56143875A/en
Publication of JPS56143875A publication Critical patent/JPS56143875A/en
Publication of JPS6230347B2 publication Critical patent/JPS6230347B2/ja
Granted legal-status Critical Current

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  • Safety Valves (AREA)

Abstract

PURPOSE: To provide a small-sized negative pressure responsive valve which may be stored in a small space by a method wherein a fluid flow passage is made to be opened when a pressure is found in the valve higher than a specified negative pressure and also higher than a specified rate of variation of the negative pressure.
CONSTITUTION: When a negative pressure higher than a first predetermined value is fed from a signal port 29 to the chambers 24, 27, the first pressure plate 14 is displaced in a leftward direction while the negative pressure is applied to the chamber 24, the shoulder part of the annular plate 15 is abutted against the valve 34, the valve 34 is opened to communicate with the surrounding air passage and the the passage is communicated with the output port 36. In the same manner, the valve 34 is opened due to a negative pressure in the chamber 27 and delayed due to an orifice 40, thereby a negative pressure in the chamber 27 and delayed due to an orifice 40, thereby a negative pressure in the chamber 26 is increased and finally returned back to the original position. When a rate of variation of the negative pressure in the chamber 27 is exceeded over a predetermined value, the valve 34 is released to open through a leftward displacement of the second pressure plate 17. In this way, it is possible small-sized negative pressure responsive valve which may be installed in a narrow space.
COPYRIGHT: (C)1981,JPO&Japio
JP4784980A 1980-04-10 1980-04-10 Negative pressure responsive valve Granted JPS56143875A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4784980A JPS56143875A (en) 1980-04-10 1980-04-10 Negative pressure responsive valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4784980A JPS56143875A (en) 1980-04-10 1980-04-10 Negative pressure responsive valve

Publications (2)

Publication Number Publication Date
JPS56143875A true JPS56143875A (en) 1981-11-09
JPS6230347B2 JPS6230347B2 (en) 1987-07-01

Family

ID=12786807

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4784980A Granted JPS56143875A (en) 1980-04-10 1980-04-10 Negative pressure responsive valve

Country Status (1)

Country Link
JP (1) JPS56143875A (en)

Also Published As

Publication number Publication date
JPS6230347B2 (en) 1987-07-01

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